Improvement in ice-machines



UNITED STATES.

PATENT f y SAMUEL B. MARTIN, oF SAN FRANGISGQOALIFORNIA.

IMPROVEMENT IN ICE-MACHINES.

Specification forming part of Letters Patent No. l 73,314, datedFebruary v8, 1876; application led May 21, 1874.

To all whom 'it may concern:

vBe it known that I, SAMUEL B. MARTIN, of San Francisco, in the c ountyof San Francisco and State of California, have invented an Improvementin Machines for the Manufacture of Ice and refrigerating purposes; and Ido hereby declare that the following isa full,

clear, and exact description of the same, ref erence being had to theaccompanying drawings, and to the letters marked thereon.

This invention relates specially to the freezing or congealin gapparatus of an ice-machine; and it consists mainly, lirst, in thepeculiar means employed for freezing the Water and forming the ice; and,second, in the peculiar means employed for detaching the ice, all of.which will be fully described hereinafter.

In the drawings, Figure l represents a side elevation of my improvedapparatus, partially in section; Fig. 2, an end elevation;- Fig. 3, aplan view, and Fi g. 4 certain means employed to convey theincongealable liquid from the freezing-cylinder to the pump.

To enable others skilled in the art to make and use my invention, I willnow proceed to describe fully its construction and mannerof operation.

B representsthe cooling-tank, located at the top 'of the machine, asshown, and A A suitable coils of pipe. contained within the tank, andadapted to receive a suitable supply of volatile liquid from any propersource in the usual well-known manner. C represents a perforated mainpipe extending over the tank in a longitudinal direction, and providedwith a series of perforated transverse arms or branch pipes, C', uponeach side, as shown. P represents a pump, the vertical cylinder of whichis connected at the upper end with the'pipe O, into which its contentsare discharged, and at its lower end by a transverse pipe, T, andsuitable branch pipes o o, having proper regulating-cocks, to thevertical freezing cylinders or cores G. K repre sents a slide, operatedbythe central lever K', which is adapted to control a series of,openings in' the bottom of the tank B, communicating with the cylindersG, as shown.v

By means of this construction of parts the incongcalable liquid, whenthe pump is operated, is caused to circulate continuously through thefreezilig-cy-fliliders, it being caused to pass from thence through thebranch pipes freezing cylinder or tube Gr. the relative diameter of eachbeing such that the space between the outer surface of the interior pipeand the inner surface of the exterior pipe is' small enough to spreadthe incongealable liquid moving through into a thin cylindrical sheet.The pipe is connected above by means of proper branch pipes, J, providedwith cocks,

with the main supply-pipe L communicating with a suitable reservoir atany proper point, and terminating below, as shown at d, Fig. 1,

in a suitable tank, into which its contents may be discharged, whendesired, by opening the lower cock M, Fig. 2. I l also represent branchpipes, controlled by proper cocks, .by l means of which communication ismade, when ter ot a suitable temperature may be employed to detach theice, either by admitting it to the interior of the inner pipe by meansof the cocks I and discharge-cock M, or to the space intervening betweenthe inner pipe and outer cylinder by means of the cock J anddischargecock M.

When the lirst plan is employed, 'the incongealable liquid in theintervening space is held at rest by closing the slide Kin the tank B;or, if a single cylinder only is to be operated upon, by closing anindependent cock adapted to shut off the supply of liquid to thatcylinder, and also closing the cocks in the branch pipes o o. v

When the second plan is employed, the iucongealahle liquid is rstwithdrawn from the cylinder by shutting ott' the supply above in anyproper manner, and permitting it to How out below by the action ofgravity and the pump, after which the cocks in the branch pipe o areclosed and the water admitted, as

before described.

D represents a pipe, extending longitudi- FFIC.

nally beneath the bottom of tank B, one end ot which is connected in anyproper manner with a suitable reservoir of fresh water, and the otherprovided with a series of openings controlled by valves F, as shown, thelatter being held to their` seats, to close the openings, by gravity,and heilig opened by an upward movement. It represents a series ofperforated rings, each one of which surrounds a freezing -cylinder, asshown, the members of each longitudinal series being united firmlytogether, and provided at each end with a socket adapted to slidevertically upon the rod S, Figs. l and 2. E represents a cup, one ofwhich is located upon the connecting-line of each pair of rings, and isadapted to deliver water thereto.

Two series of rings are employed, one upon each side'of the machine, asshown in Fig. 2, and the same are supported by means of a proper cord orchain at each end, passing over the pulley b, the two being so connectedthat by the depression of one the other is elevated, as indicated inFig. 2.

The arrangement of parts is such that when one side is raised to itsextreme elevation the valves F are lifted, and water thereby permittedto dow into the cups E, which descend after receiving a proper quantity,and discharge their contents .in the form of spray upon the centralcylinder. By the descent of one the other is raised in position toreceive its supply, this ascent and descent being continuedindefinitely.

From the foregoing description the operation will be readily understood.The volatile liquid is circulated through the coilsA in tank B, in anyproper manner. The incongealable liquid is sprayed upon thecoils A intine particles, and thus brought very intimately into contact with thecooling-pipes. This liquid, when reduced in temperature below thefreezing-point, is admitted through the openings in the bottom of thetank, controlled by slide K, to the freezing-cylinder G, through whichit passes in a thin cylindrical sheet, by which means all, or nearlyall, its particles are brought into contact with the inner surface ofthe cylinder, and the heat more perfectly abstracted therefrom, afterwhich it passes through branch pipes 0 and pipe T to the pump, by meansof which it is again delivered to the tank in the form of spray.

The water to be frozen is delivered to the cups E, from which vit issprayed upon the freezing-cylinders as the cups descend, each sideascending and descending alternately, as hereinbei'ore described.

The ice is detached either by permitting water of a proper temperature'to flow through the interior pipe H, the incongealable liquid heiligheld in a state ot' rest in the space intervening between the pipe andcylinder, or by withdrawing entirely the incongealable liquid andpermitting the water to flow through in its place.

the construction and arrangement' of parts shown and described.

The vertical position of the freezing-cylinders permits theincongealablc liquid to be employed in a sheet uniformly thin, by meansof which the best effect is produced. By

means of this position the incongealable liquid can be readily withdrawnif it is desired I to use water in its place to detach the ice.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. As an improvement in the process of making ice which involves theemployment of an incongealable fluid cooled by a volatile uid or liquidapplied within cylindrical freezing-pipes, I claim supplying saidincongealable liquid to the freezing-plates in a thin cylindrical sheet,substantially as described.

2. A vertical freezing-cylinder, having an internal core fordistributing the incongealable liquid within the cylinder in a thincylindrical sheet, as described.

3. The combination of a vertical freezing- `cylinder, an internal pipeto convey Water,

and means for controlling the supply of water, as described, thecylinder and pipe holding the contained liquid in a thin cylindricalsheet, for the purpose of rapidly communicating to the incongealableliquid the heat from the water, as described.

4. The combination of the freezing-cylinder, the internal pipe,the'supply-pipe L, and the double system of cocks, to supply watereither to the inner pipe or to the space intervening between the two,substantially as described. y

5. The combination of a central core with a surrounding sprayingapparatus moving vertically, substantially as described.

6. The combination of a vertically-moving spraying apparatus, asupply-pipe, and a trip valve, substantially as described.

7. The combination of the independent series of spraying cups and rings,the connecting chain, and supporting pulley, substantially as described.

8. In an ice-machine, the combination of the vertical freezing-cylinderGr, the connecting-pipes o T, pump P, and perforated spraying-pipes CG'. l

9. The combination of the vertical freezingcylinder' pipes o T, pump P,perforated spraying-pipes C C', and valves F with a verticallymovingspraying apparatus.

10. The combination of the slide K and lever K with the tank as and forthe purpose described.

In witness whereof I have hereunto set my hand and seal.

sAML. B. MA1-tris. p.. ai

Witnesses:

E. V. SUTTER, C. W. M. SMITH.

